removed remnant placeholder url

src/components/SetupView.vue

@@ -19,7 +19,7 @@ const step = ref(1)
 const loading = ref(false)
 
 const dbUploadForm = reactive({file: null, is_valid: false})
-const dbConnForm = reactive({url: 'sqlite:///../static/test.sqlite3', is_valid: false})
+const dbConnForm = reactive({url: '', is_valid: false})
 
 async function startSessionAction() {
   loading.value = true